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Sound Level Meters by Mind Map: Sound Level Meters
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Sound Level Meters

How they Work

Parts

Microphone

Preamplifier

Amplifier

Frequency Weighting Filter

Meter Response Circuits

Digital Readout

Measure Decibels

<70 Safe

>70 Hazardous

Why they are important

Noise Pollution

Effects on Humans, Cardiovascular Issues, Hearing Problems, Sleep Disturbances, Interference in Verbal Communication, Mental Health Problems

Perks for Using in OSH field

Quick Reading

Programmed to Meet OSH Standards, Slow Meter Response, A Scale

Actual Reading, Determine Time Weighted Average, Determines Daily Dose

Help Determines what Safety Measures should be taken

Features

Frequency Weighting

A Scale

C Scale

Response Speed

Fast

Slow

Types

0 Most Technical

1

2 Most OSH use this

3, Least Technical

Measure Impulse/Impact Sounds

Different Systems

American National Standards Institute

International Electrotechnical Commission

International Organization for Standardization